High-voltage switch sf6 gas decomposition product online sampling measurement system
A gas decomposition and high-voltage switch technology, which is used in the maintenance of insulated electrical equipment and high-voltage fields, can solve the problems of destroying the lives of maintenance personnel, environmental pollution and harm, and achieve the effect of reducing equipment loss, ensuring normal operation and preventing environmental pollution.
Inactive Publication Date: 2016-03-02
HENAN RELATIONS +2
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Problems solved by technology
[0004] However, currently field-applied SF 6 Most gas decomposition detectors use offline methods, which require sampling to the laboratory for testing, or on-site testing by personnel (the on-site testing cycle is longer), and cannot reflect the status of electrical equipment in a timely or real-time manner
Moreover, due to the use of off-line detection, it is necessary to sample or extract sample gas during the detection process. In this way, it will cause a certain outgassing effect on the sulfur hexafluoride high-pressure equipment. Cause the adverse effect of the pressure drop of the high-voltage switchgear body, affecting the normal operation of the equipment
Furthermore, the sampling gas or detection gas during detection is directly emptied, and this part of the exhausted air will cause a greenhouse effect on the ecological environment in which human beings live (sulfur hexafluoride gas itself is a gas with a strong greenhouse effect, and its greenhouse effect The effect is 23,900 times that of equivalent carbon dioxide), causing pollution and damage to the living environment, and at the same time causing harm to the body and even life of maintenance personnel (decomposition products contain some highly corrosive and highly toxic substances)
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[0015] Such as figure 1 , 2 As shown, the present invention includes a sampling gas circuit, an on-line detection and recovery gas circuit, and a backfilling gas circuit; the sampling gas circuit includes sequentially connected four-way valve K, first manual valve K1, first solenoid valve V1, and three-way valve S1, The four-way valve K is connected to the sampling pipeline, and the first oil port, the second oil port and the third oil port of the four-way valve K are respectively connected to the fourth solenoid valve V4, the fifth solenoid valve V5, The inlet ports of the sixth solenoid valve V6, the fourth solenoid valve V4, the fifth solenoid valve V5, and the sixth solenoid valve V6 are connected to the sulfur hexafluoride equipment 1, and the first manual valve K1 and the gas path of the first solenoid valve V1 are connected with a The first pressure transmitter P2; the online detection and recovery gas circuit includes the second solenoid valve V3, flow control valve Q...
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The invention discloses an on-line sampling and measuring system for a high-voltage switch SF6 decomposition product. A sample in SF6 equipment is extracted by a sampling gas circuit; the extracted sample is delivered to an on-line detection and recovery gas circuit; detection of various parameter indexes of the sample is performed in the on-line detection and recovery gas circuit; a detection result can be sent to a remote centralized control center by a field industrial personnel computer; after the detection, surplus gas is recovered by a recovery device, so that environmental pollution and an influence on health of field personnel are avoided; and detection equipment is subjected to gas supplement by a recharging gas circuit, so that normal operation of the equipment is ensured, and loss of the equipment is reduced.
Description
technical field [0001] The invention relates to the technical field of maintenance of high-voltage and insulated electrical equipment, in particular to a high-voltage switch SF 6 Gas decomposition product online sampling measurement system. Background technique [0002] Sulfur hexafluoride gas (SF 6 ) has excellent insulation and arc extinguishing properties, and is widely used in gas-insulated switchgear (GIS), gas-insulated circuit breakers, transformers, transformers and other electrical equipment. The switchgear with a voltage level of 110kv and above in my country mainly uses sulfur hexafluoride gas Insulation equipment, therefore, the scientific evaluation of equipment status is of great significance to ensure the operation of the power grid. [0003] Studies have shown that for sulfur hexafluoride gas (SF 6 ) The detection of gas-insulated equipment currently adopts the method of detection of gas decomposition products of sulfur hexafluoride gas. This method genera...
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IPC IPC(8): G01N1/22G01N35/00G08C17/02G01R31/327
Inventor 汪献忠李建国蔡巍王三霞
Owner HENAN RELATIONS